SnagMP - Milepost Tool

Tracking since Apr 26, 2026.

Changelog

• Apr 26, 2026
  description

  (empty)

  SnagMP overlays highway milepost information directly on Google Maps. Built for transportation professionals, civil engineers, DOT workers, and construction companies who need quick, accurate milepost data without leaving the browser.                                                                                                               
                                                                                                                                                                                  
    Supported States: Washington, California, Oregon, Texas, Utah, and Idaho.
  
    FEATURES (All Free)
  
    Milepost Search — Enter a route number and milepost to jump directly to that location on Google Maps. Supports mainline routes, spurs, couplets, and station equations.       
  
    Pin Mode — Drop a pin anywhere on a state highway and instantly see the route number, milepost, direction, and offset from centerline.
  
    Street View HUD — Drop into Google Street View and see real-time route and milepost data overlaid on the screen. Data prefetches on entry for instant updates as you move.    
  
    State Detection — Automatically detects which state you're viewing and switches to the correct DOT data source.
  
    Route Detection — Automatically identifies the nearest state route and snaps to the DOT Linear Referencing System (LRS) with sub-foot accuracy.
  
    DATA SOURCES
    SnagMP uses publicly available data from:
    - State DOT ArcGIS REST Services (route geometry, mileposts)
    - US Census Bureau Geocoding Service (state boundary detection)
  
    All data processing happens locally in your browser. No highway data is transmitted to external servers. SnagMP does not collect or share any user data.
  
    SUPPORT & FEEDBACK
    Visit http://www.snagmp.com for documentation and support, or submit feedback through the extension's About page.

• Apr 26, 2026
  short_description

  (empty)

  Finds mileposts on Google Maps.

• Apr 26, 2026
  name

  Unknown

  SnagMP - Milepost Tool

• Apr 26, 2026
  category

  (empty)

  productivity/tools

• Apr 26, 2026
  host_permissions

  (empty)

  https://geocoding.geo.census.gov/*, https://www.snagmp.com/*, https://snagmp.com/*, https://services.arcgis.com/*, https://services2.arcgis.com/*, https://services3.arcgis.com/*, https://services6.arcgis.com/*, https://data.wsdot.wa.gov/*, https://caltrans-gis.dot.ca.gov/*, https://gis.odot.state.or.us/*, https://gis.itd.idaho.gov/*, https://dtdapps.coloradodot.info/*, https://azgeo.az.gov/*, https://aldotgis.dot.state.al.us/*, https://gis.ardot.gov/*, https://gisportal.dot.ct.gov/*, https://enterprise.firstmap.delaware.gov/*, https://gis.fdot.gov/*, https://rnhp.dot.ga.gov/*, https://gis.iowadot.gov/*, https://gis1.dot.illinois.gov/*, https://gis.indot.in.gov/*, https://wfs.ksdot.org/*, https://maps.kytc.ky.gov/*, https://maps.dotd.la.gov/*, https://gis.massdot.state.ma.us/*, https://gisportalapps.sha.maryland.gov/*, https://arcgisserver.maine.gov/*, https://webgis.dot.state.mn.us/*, https://gis.mississippi.edu/*, https://app.mdt.mt.gov/*, https://gis.ne.gov/*, https://maps.dot.nh.gov/*, https://gis.dot.nv.gov/*, https://gis.dot.ny.gov/*, https://tims.dot.state.oh.us/*, https://mapservices.pasda.psu.edu/*, https://risegis.ri.gov/*, https://gis.scdot.org/*, https://sdgis.sd.gov/*, https://maps.vtrans.vermont.gov/*

• Apr 26, 2026
  permissions

  (empty)

  storage, unlimitedStorage

Permissions & access

Permissions

storageunlimitedStorage

Host access

https://geocoding.geo.census.gov/*, https://www.snagmp.com/*, https://snagmp.com/*, https://services.arcgis.com/*, https://services2.arcgis.com/*, https://services3.arcgis.com/*, https://services6.arcgis.com/*, https://data.wsdot.wa.gov/*, https://caltrans-gis.dot.ca.gov/*, https://gis.odot.state.or.us/*, https://gis.itd.idaho.gov/*, https://dtdapps.coloradodot.info/*, https://azgeo.az.gov/*, https://aldotgis.dot.state.al.us/*, https://gis.ardot.gov/*, https://gisportal.dot.ct.gov/*, https://enterprise.firstmap.delaware.gov/*, https://gis.fdot.gov/*, https://rnhp.dot.ga.gov/*, https://gis.iowadot.gov/*, https://gis1.dot.illinois.gov/*, https://gis.indot.in.gov/*, https://wfs.ksdot.org/*, https://maps.kytc.ky.gov/*, https://maps.dotd.la.gov/*, https://gis.massdot.state.ma.us/*, https://gisportalapps.sha.maryland.gov/*, https://arcgisserver.maine.gov/*, https://webgis.dot.state.mn.us/*, https://gis.mississippi.edu/*, https://app.mdt.mt.gov/*, https://gis.ne.gov/*, https://maps.dot.nh.gov/*, https://gis.dot.nv.gov/*, https://gis.dot.ny.gov/*, https://tims.dot.state.oh.us/*, https://mapservices.pasda.psu.edu/*, https://risegis.ri.gov/*, https://gis.scdot.org/*, https://sdgis.sd.gov/*, https://maps.vtrans.vermont.gov/*

Screenshots